diff --git a/requirements/tests.txt b/requirements/tests.txt
index 3398a20a2..8763670ef 100644
--- a/requirements/tests.txt
+++ b/requirements/tests.txt
@@ -4,7 +4,7 @@ interrogate
 isort==4.3.21
 nbconvert
 nbformat
-numpy < 1.24.0
+numpy < 1.24.0 # A temporary solution for tests with mmdet.
 pytest
 xdoctest >= 0.10.0
 yapf